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PowerStop AR8659SCR Disc Brake Rotor - Front
| Brand | PowerStop AR8659SCR |
|---|---|
| Position | Front |
| Discard Thickness | 1.08 |
| Discard Thickness | 27.50 |
| Nominal Thickness | 1.14 |
| Nominal Thickness | 29.00 |
| Balancing Type | Mill balanced |
| Construction | Full cast |
| Rust Resistant Coating | Yes |
| Overall Height | 54.20 |
| Outside Diameter | 11.88 |
| Outside Diameter | 301.80 |
| ABS Tone Ring Included | No |
| Surface Type | Smooth |
| Solid Or Vented Type Rotor | Vented |
| Mounting Bolt Hole Circle Diameter | 127.00 |
| Mounting Bolt Hole Circle Diameter | 5.00 |
| Stud/Lug Hole Quantity | 6 |
| Product line | PowerStop - Front Coated Hat and Edge Rotor |
| Fits | Buick, Chevrolet, GMC, Isuzu, and Saab · 16 vehicles |
OE-style replacement. Direct bolt-on rotor with matched weight and vane count.
Corrosion-resistant coating. Silver epoxy protects the hat, edge, and vanes from rust.
Vented full-cast design. Smooth surface and mill-balanced construction for brake service.
Cross-references 8-21998-532-0, 21998532 and 25826102 for the same application. See all 4.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Coated Front Brake Rotor
PowerStop AR8659SCR is a front disc brake rotor built as a direct bolt-on replacement for original equipment. It is designed for vehicles that need OE-style fitment, vented construction, and corrosion protection in areas exposed to the elements.
Key Features
- Partially coated rotor with silver epoxy on the hat, outer edge, and vanes
- Rust-resistant finish helps preserve appearance behind alloy wheels
- Vented, full-cast construction with a smooth friction surface
- Mill balanced to support OE-style operation
- Matches original equipment weight and vane count for fitment consistency
Detailed Description
This PowerStop brake rotor is engineered for front brake service on Chevrolet Trailblazer, GMC Envoy, Saab 9-7x, Isuzu Ascender, and Buick Rainier applications. The AR8659SCR uses a coated hat and edge design to reduce corrosion on exposed surfaces while keeping the braking surface smooth and ready for normal pad contact. Its 11.88-inch outside diameter, 5.00-inch bolt circle, and 6-lug pattern align with the listed applications, and the vented full-cast design supports heat management during braking. This part cross-references Monroe Shocks & Struts (e.g., 8-21998-532-0, 21998532) for the same application.
What It Is Used For
- Replacing a worn or rusted front brake rotor
- Restoring braking performance after rotor scoring or thickness loss
- Addressing vibration caused by uneven rotor wear
- Improving corrosion resistance on exposed rotor surfaces
- Maintaining OE-style fit on the brake system
Installation Notes and Tips
Verify rotor diameter, bolt circle, and lug count before installation. Clean the hub mounting surface thoroughly to help prevent runout-related issues. Confirm pad condition and inspect caliper hardware during brake service. Fits 2007-2009 Chevrolet Trailblazer, front; Fits 2005-2009 GMC Envoy, front; Fits 2008-2009 Saab 9-7x, front; Fits 2006-2008 Isuzu Ascender, front; Fits 2006-2007 Buick Rainier, front.
Quality Assurance
PowerStop designs this rotor to match original equipment performance and specifications, including weight and vane count, for consistent fitment on the listed applications.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2009 | Chevrolet | Trailblazer | LT | — | — | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2009 | GMC | Envoy | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2009 | Saab | 9-7x | 4.2i | — | — | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2008 | Chevrolet | Trailblazer | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2008 | GMC | Envoy | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2008 | Isuzu | Ascender | — | — | — | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2008 | Saab | 9-7x | 4.2i | — | — | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2007 | Buick | Rainier | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2007 | Chevrolet | Trailblazer | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2007 | GMC | Envoy | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2007 | Isuzu | Ascender | — | — | — | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2006 | Buick | Rainier | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2006 | Chevrolet | Trailblazer | — | 4.2L | L6 | Front | Regular Length; PowerStop - Front Coated Hat and Edge Rotor |
| 2006 | GMC | Envoy | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2006 | Isuzu | Ascender | — | — | — | Front | PowerStop - Front Coated Hat and Edge Rotor |
| 2005 | GMC | Envoy | — | 4.2L | L6 | Front | PowerStop - Front Coated Hat and Edge Rotor |
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